/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.explorer.ui.event;

import com.vaadin.ui.Component.Event;
import com.vaadin.ui.Component.Listener;


/**
 * Listener that listens to {@link SubmitEvent}s and delegates to
 * {@link #submitted(SubmitEvent)} or {@link #cancelled(SubmitEvent)} methods.
 *
 * @author Frederik Heremans
 */
public abstract class SubmitEventListener implements Listener {

    private static final long serialVersionUID = 1L;

    public final void componentEvent(Event event) {
        if (event instanceof SubmitEvent) {
            SubmitEvent gfe = (SubmitEvent) event;
            if (SubmitEvent.SUBMITTED.equals(gfe.getType())) {
                submitted(gfe);
            } else {
                cancelled(gfe);
            }
        }
    }

    /**
     * Called when form is submitted.
     */
    protected abstract void submitted(SubmitEvent event);

    /**
     * Called when form is cancelled.
     */
    protected abstract void cancelled(SubmitEvent event);

}
